Pedal mechanism.



TINITED STATES PATENT onnron- GEORGE B. KELLY, OF JAMAICA PLAIN, MASSACHUSETTS.

PEDAL MECHANISM.

Specification of Letters Patent.

5 State of Massachusetts, have invented certain new and useful. Improvements inPedal Mechanisms, of which the following is a specification. 1

This invention relates to a edal mechan ism and particularly to a pe'al mechanism used for operating air pumping bellows such as are provided in pneumatical playing attachments for musical instruments.

The object of my invention is to provide a ectlve in use and so constructed asnot to produce any noises which would or could mtcrfere with the music produced.

20' In the accompanying drawings, a side eletional construction and rovided with spring the storage bellows 3 also of conventional construction. The pedals 4 are pivotally mounted on aframe 5-pivoted at 6 in the casing 7 of the instrument which frame can be swung within the casing when the pedals are notto be used'or'c'anbeswung out, as shown, for use of the pedals, this frame being provided at its outer end witha support 8. To

the movable board 9 of---each pumping 'bellows 1 an angle piece 10 is securedqn such a manner that onearm ofthe angle piece, projects beneath the bottom edge of the movable board toward the front of the casing and to the forward end of the lower member of the'angle bar,'the push bar 11 is pivoted at tension 13 beneath the lower arm of the angle .bar 10. A spring v14 attached to the extension 13 is interposed between this extensionsion, thereby pressing t e forwardend ofthe .push barlflupwardfi This forward end of new and improved pedalmechanism for this a urpose, which is simple in construction, ef-

The pumping bellows 1, of which there are usually two inan instrument, are of conven- 12 which push bar 11 is provided with an exand thebottorncdge of the lower part of the angle bar and serves to ressdown the exten-j the push bar is tapered to form a rounded edge 15 which rests in .a notch 16 formed on the underside of the pedal As the pedals are forced down they push backward and downward the-push bars ll which in turn force the mdva 'leboard 9 of each bellows Patented Sept. 1, 1908. Application filed rebruar 'u, 1908. Serial No. 415,238. 1

toward the rear thereby expanding the bellows and drawing the air out of the storage bellows 3. When the pedals are released, the springs 2 collapse the bellows and so on.

As the edals are swun down the angle of ed'als inclination of the ush bars'll to the is greatly change and thesubs'tantia knife edge ends of the push bars in-the notch 16 permit of such changes without making use of a ivot and without undue friction or the" possi ility .of creating any disturbing noises.

'As the push bars 11 are swung to the .rear' and downward their extensions 13 are moved toward the bottom edges of the angle pieces '11 and asthe movable boards of the bellowsare forced to the frontnby the expanding springs 2, the 'push bars 11 are moved upward and forward and at the same time their extensions 13. are forced down bythe corresponding springs-.14 to compensate for the movement of the push bars in relation to the pedalsfand preventing the push-bars from working out of-the'proper position in-relation to the pedals.

' When the pedals are not required thepedal' I frame 5 is swung into the easing into upright position, the pedals projectin upwar fromthe same, as shown in dotte lines. When the pedals are to be used, the frame 5, is

swung downward .and outwardand the ed-i als slide alon the-free ends-of the usb are 11 until the eedge ends- 15 o the ush bars 11 reach the notches 16 in-the pcd'a s in 4 which they pass whereupon the pod used for pumping.

s can be Having described .mylirivention what I claim as new and desire to secure by Letters Patent is: v

1. The combination with. a edal and a bellows, of a .pushbar pivotal yconnected 'withlthebellows and having an extension be yond its pivotal connection, a spring bearin on the extension, the forwardend ofthepus "bar being in'contact-with thepedal, substa'n 'tially asset forth.

- '2."'Th e combiriatior1v withja .pedal and bellows, of an angle bar secured to the bot- Signed at New York city in the county of tom part of the movable board of the bellows, New York and State of New York this 29th 10 a push bar pivoted to the bottom Ine'mbenof day of January A. D. 1908.

the angle bar and having an extension beyond its pivot, a spring interposed between GEORGE KELLY said extension and the angle bar, the forward Witnesses: end of the ush bar resting loosely in a notch J F. MEADE,

of the peda substantially as set forth. D. C. HEINs. 

